Plesk Migrator omits important settings, gets others wrong, FPM

Hi all,

I recently migrated a complete Server via Plesk. OS on both sides Ubuntu 14.04.3, Plesk latest on both sides. So it should be straightforward, right? Er, nope...

Some - for me - crucial "per website" settings are NOT migrated:

1. PHP Settings | Additional configuration directives
2. Apache & nginx Settings | Additional nginx directives

so I ended up e.g. without the additional PHP-Settings to use Redis as session server, not to mention that my own Nginx-Config file...

Plesk Migrator omits important settings, gets others wrong, FPM